Enhance assistant capabilities and configuration updates

Refactor code structure for improved readability and maintainability

feat: Update blog data processing to create vector database and enhance stats tracking

Refactor research agent implementation and remove unused modules

Add blog data update functionality and vector store management

feat: Enhance blog data processing with utility functions

Add initial implementation of chat application with environment variable support and vector storage integration

Refactor code structure for improved readability and maintainability

Initialize project structure with main application file, pyproject configuration, and .gitignore for Python environment.